Mine-shovel.



J. G. GARTMILL.

MINE sHovBL.

APPLIUATION FILED 00T. 5, 1912.

Patented Nov. 11, 1913.

5 SHEETS-SHEET 1.

WITNESSES J. c. GARTMILL, MINE SHOVEL. APPLICATION FILB 90T. 5, 1912'.

Patientea Nov.v 11, 1913.

5 SHEETS-SHEET 2.

J. C. GARTMILL.

MINE SHOVBL.

APPLICATION FILED 00T. 5, 1912.

Patented Nov. 11, 1913.

5 SHEETS-SHEET 3.

J. C. CARTMILL.

MINE SHOVBL.

APPLICATION FILED 00T.

Patented NOV. 11, 1913.

' 5 SHEETS-SHEET 4.

J. C. GAR'I'MILL.

.MINj sHovBL. APpLIcATIoN rI-LBD 00T. 5, 191g.

Patented Nov-.11, 1913:

- 5 SHEETS-SHEET 5.

@Wacom c. STATES PATENT FFQE `JormeABBo'rT cammini, or' LEAD, soU'rH'DhxoTi Toy all/whom t may concern Be it known that I, JOHN C. CARTMILL.

a: citizen of the United States, vresiding at Lead,y in the county of Lawrence and State ofi South Dakota,.have invented anew and,

f. useful Improvement in Mine-Shovels, of

. alt-houghfit will 'of course be understood that 10 Which-the following is a specification.

This. inventionrelates to a mine shovel the-invention can be employed in excavating cuts. or removing banksor in handling piles of coal or ores, as itsusefulness is not lim-l f 'i lited --to minework.

' The invention consists in a truck adapted 4to traveluponat-rackandl from which eX- tends aslidable beam carrying a shovel',4 said' beam being; supported `upon a steer` able frame-and together Withmeans for lowering and raisingthe shovel, sliding the beam forwardly and rearwardly, and conveying. the matter collected by the sho-vel from the swinging frame tothe rear of the .truck where it is discharged. into a suitable car.

The above'is a brief outline ofy the device vvhich will be hereinafter-- fully described, Iilnted outrk in the claims and which is shown ini'. "atie'cmpanyingj l drawings, in

Which- Figure 1 is a. side elevationpf um @ma plete device. Fig. 2 is an enlarged side ele vation ofthe forward portion of the Ltruck and parts carried thereby. Figi` @is an enlarged vertical section upon the line 3- 3 of Fig. Y1. Fig. .4 isan enlarged vertical section vupon the line 4-4 of Fig. 1, looking to- Ward the rear. Fig. v5 is an enlargedI side 'elevation of the upper portion ofthe front frame. Fig. 6 is a horizontal section on the line 6 6 of"-Fig. 1. Figs. 7,.8', fand` 9 are details of la-Winding drum mechanism. Fig. 10 is a plan. vievv1 ofia truck frame showing 'ia' rack mounted thereon. l v @In thesedrawings, 1 represents a suitable.

truck,.vvhiclfx` travels immediately in advance 'able ci-oss piece 4.1 Uponfthe rear of thej truck are` similar uprights'fa .Mounted upon" L'the truck is la suitablemotor of-anyf desired fand there is' alsolno"v struck," Va'suitable upright' fra VVframe 'are journaled' drum` "Brum-"9, which is the lowern pon `the ne'i p` with a' suitable sprocket 10, and a sprocket Specification of .'Letters Patent.

chain 11 runs from th'eunotor ove 1 sprocket Wheel.

the drum 8. f It Willof' coursev be term drum ask use' the shaft and that@` to be Wound.

vMounted transversely-sacri i:

truck isa shaft 15 Wliiycl 16. Rack bars 18-Wlii members of the front'ffr'aiie" upon said cog Wheel'sjand ends 'carry suitable vuprifh which are connected" Extending from the'L-c'ro cross member 20 'andjsecf sides of said cross niel vbeams 21, forming;

slidably held a shovel Y Petntedlvfiili, 19213 Application led October 5, 1912. Seria. No. 7`24,141.gi y This drum',- a suitable sprocket""`112 and chain 13 runs overjthesprocketH and also over a sprocket'i tion upon which suitable ablsi yf mel iiicludes *fb'ofth ualarenlarged per. 65

the uprights 19 andl'the 'gr which the cable 24:v 'is sec y 24 travels over a smal the underside of the fe slidable beam 22 and'ila most clearly shownfi'ri* di 33 Jand-af link 34..- the i link as shown .in Figu-f yj A ely-: A Aiel'ltly formed upon the' @tippe 'Re being connected to a rearwardly extending bail 35' the shovel as shown in Figs. 1

A forward conveyer 36 receives the material from the shovel, the same being directed` thereto by a-Vsuitably arranged apronV 37 arl ranged between the lower part of the conveyer 36 and below the shovel, when the same is in dumping position, said vapron being carriedby two braces 38 of the front frame. From the eonveyer 36 the material is conveyediby a. discharge chute 39 upon a `longer conveyer 40. This conveyer is off-set with-respect to the truck 1 in order to clear the drums 8 and 9. At its upper end the 'conveyer 40# discharges into a second chute 4l, which in turn dischargesthe material into the c'ar 2. It will be understood that these conveyers may be of any suitable type .adapted to handle the material being worked upon, and they are provided with any necshaft 42 and a sprocket chain 43 extends from the motorand runs over a suitable sprocket-wheel 44 fixed upon one end of said shaft. Upon the other end of said shaft are sprocket wheels -45 and 46. A chain 47 runs from thel sprocket wheel 45 to a sprocket wheel 48 mounted upon a shaft 49, and upon saidshaft is valsomounteda sprocket wheel 50 and a chain 51 runs from the sprocket wheel50 over a sprocket wheeI 52 mounted upon a shaft 53 upon which is also mounted The shaftis provided with a sprocket.

adrum 54 over'which the upper end of the A suitable sprocket;`

conveyer 36 passes. y chain 55 also runs from ythe motor over a suit-able sprocket wheel 56, which drives the drum .57 over which the lconveyer 40 travels at its upper end. The shaft 15 is provided with a gear wheel 58v which meshes with a suitable gear Awheel 59 carried by a shaft 60 parallelV t0 and to the rear vof the shaft 15.

L wheel 61 over whlch runs a sprocket cha-in' 62, hich turn runs over the sprocketl 'Itf will of course be understoodthat any desired arrangement of gearing may be employed forv the purpose of driving the conlveyers, and .I have. described in detail the form shown in order Athat the operation of the parts may be clear.

In order Ato steer the forward frame. a

suitable steering rod 63 is provided, which at its lowerend carries a worm' gear 64 y meshing with a worm wheel 65 carried by the end of a shaft 66 upon-.which wind and unwind cables 67 connected to the pivoted axle '68 uponwhich the front wheels 23 are mounted. In order that the devices mounted upon the truck 1 may also be swung from side to side, I form said truck with an form. While 8 and 9 represent the complete drums the detail parts of a single drum are as follows: A spool 71 has a flange 72 on which works a hand brake 73. A depending frame 74supportsa shaft 75l to which is secured one end of the band. Alever 76 is mounted on the-shaft and the opposite' end of the band is secured to the lever. At the opposite end the spool engages a friction ring 77 fixed on the drum shaft 78 which is hollow and slotted atl 7 9, the s ool being slidable. The friction ring coul be of any desired form. but I recess its inner face and secure wooden blocks 80 thereto, and provide the'ace of the spool with a cut face to coperate with the blocks-so the two faces will disengage automatically when released. To drive the spool to the ring I provide a thread box 81 in which works a screw 82. This enters the shaft 78 and engages a pin 83 which forces' a block 84 against the spool 71 through slot 79, and holds same against the friction ring. `The screw is rotated by al handle 85. The track is carried by the car .frame l and the rear of the platform 1HL rests on a circular plate 87 through lthe center-.of ywhich the king bolt 69 extends. Suitablecogwheels,

vnot shown, support the front' of' th'platform and travel on the rack portion the trackway 70.

What I claim Ais ff 1. The combination with a truckV of a frame mounted upon two front wheels,'cog wheels mounted upon the truck, rack bars carried by the said Aframe and adapted to work upon said cog wheels, a shovelcarried byv said frame, means mounted upon .the truck for controlling said shovel, and means vcarried by the frame and operable from the truck for steering the wheels ofthe frame.

2. A device of the kind described comprising a truck, a steerable frame, the rear end of which is loosely mounted'upn and movable longitudinally with respect to the truck,

guides carried-by' said frame, a beam slid able in said guides, a shovel suspended from said beam and means mounted upon the truck for regulating movement of theb'eam and rise and fallof the shovel.

3. The combination with a truck, a frame having its rear end movably mounted upon the truck, wheels supporting the front porlos tion offsaid frameya shovel'supported'from said frame, 4 a conveyor arranged in said 'frame and adapted to receive mterial from .said shovel7 a second conveyer carried by and to one side of the truck, and adapted toreceive material from 'the irst mentioned conveyena chute adapted to discharge material from the second conveyer into e, suitable car, and means mounted upon the truck for operating said shovel. y

4:. A device of the kind described comprisinga a steerable frame, atruck supporting the rear endoi:` said frame, the frame being movable longitudinally with respect to said truck, Guides carried by said iframe, a beam slidablebetween `said guides, e pulley' arranged at the front ends of said guides, a second pulley arranged at the rear ends of the guides, e drum mounted upon the truck, a cable having one end secured to the drum, said cable passing over said pulleys and thence rearwardly from the rst mentioned pulley to the rear end of the beam, and being secured to said rear end, a shovel, e second drum upon the truck, a cable havlng one end se cured to 'said second` mentioned drum and the other end secured to the'shovel and a pulley secured to the 'forward portion of the beam, the last mentioned cable running over said pulley.

5, A device of the lkind describeaccomprising 'all truck, a-frame, said framecoinprisng rack bars, co truck,\'the rac bars of the frames resting upon said Wheels, Wheels supporting the front end of the frame, guides carried by v the frames, a beam slidably mounted '1n said guides, .a shovel suspended from the -for Ward portion of said beam,' a brace secured to the rear 'portion 0f the beam pivotally connected to thenshovel', drums upon thev truck, and cables connected respectively to said drums and to said beam'and shovel.

JOHN' CABBOTT CARTMILL.

' Wheels mounted upon the. 

